Refrigeration & Air-Conditioning Practice Set-3

May 18, 2021

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1. The C.O.P. of a refrigerator working on a reversed Carnot cycle is (where T₁ = Lowest absolute temperature, and T₂ = Highest absolute temperature)

2. The operating pressure for refrigerating units using R-12 as a refrigerant is

3. The freezing point of sulphur dioxide is

4. Highest temperature encountered in refrigeration cycle should be

5. The minimum temperature to which water can be cooled in a cooling tower is

6. A thermostatic expansion valve in a refrigeration system

7. In a refrigeration system, heat absorbed in comparison to heat rejected is

8. Most thermostatic expansion valves are set for a superheat of

9. Critical temperature is the temperature above which

10. Freon group of refrigerants are


 

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